27
APPENDIX A - CONTROL MODULE
A.1 Installation Environment Considerations
WARNING
If you do not follow these
instructions exactly, a fi re or
explosion may result causing property
damage, personal injury or loss of life.
Do not use this appliance if any part
•
has been under water.
Immediately call
a quali
fi
ed service technician to inspect
appliance and to replace any part of control
system and any gas control which has been
under water.
Do not allow water to drip on controls.
•
Prevent condensation by allowing air
circulation around module and gas control.
Do not use corrosive chemicals around or on
•
module or gas control.
!
Controls can be damaged by excessively high
•
temperatures. Verify adequate air circulation
around control is maintained when installing
boiler.
A.2 Electrical Connections
Connect Module Connectors Figure 14, Page
18
L1& L2 leads inside J-box using wire nuts.
•
Secure J-box cover.
Circulator harness to circulator. Harness comes
•
plugged into module with Molex
®
plug.
Thermostat connection to yellow wires marked
•
TT using wire nuts.
Ensure remaining Molex
•
®
plug connectors have
not worked loose during transit.
Check sensing bulb is fully inserted in well and
•
is not loose.
Refer to enclosed addendum for wiring
•
instructions when using indirect hot water
heater.
A.3 Adjusting Settings
To discourage unauthorized changing of settings, pro-
cedure to enter adjustment mode is required.
To enter adjustment mode, press UP, DOWN, and I
buttons simultaneously for three seconds. Press and
release I button until parameter requiring adjustment
is displayed. See Figure 12, page 16.
“SP_” Setpoint (180 °F default setting; ad-
о
justable between 130 and 220 °F)
“Df_” Setpoint Differential (15 °F default set-
о
ting; adjustable between 10 and 30 °F)
“°F_” Degrees Fahrenheit
о
Press UP or DOWN button until parameter has
reached desired value. After 60 seconds without any
button inputs, control automatically returns to READ
mode.
A.4 Display
In RUN mode, status items and parameters are
viewable.
Example
, to display setpoint, control
fl
ashs “sp”
(setpoint) followed by temperature (i.e., 135),
followed by °F or °C.
To read settings, press and release I key to
fi
nd
parameter of interest.
Example,
press and release I until setpoint (sp) is
displayed, followed by three-digit number, i.e., 190,
followed by °F or °C. Press I button again will display
(S1T) Sensor 1 Temperature followed by three-digit
number and corresponding degree designator.
See Display Readout.
Figure 18 - Display Readout
